1906311968166 has 32 divisors (see below), whose sum is σ = 3975149629440. Its totient is φ = 608694772896.

The previous prime is 1906311968161. The next prime is 1906311968233. The reversal of 1906311968166 is 6618691136091.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1906311968161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43111036 + ... + 43155231.

It is an arithmetic number, because the mean of its divisors is an integer number (124223425920).

Almost surely, 2^{1906311968166} is an apocalyptic number.

1906311968166 is an abundant number, since it is smaller than the sum of its proper divisors (2068837661274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1906311968166 is a wasteful number, since it uses less digits than its factorization.

1906311968166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86266428.

The product of its (nonzero) digits is 2519424, while the sum is 57.

The spelling of 1906311968166 in words is "one trillion, nine hundred six billion, three hundred eleven million, nine hundred sixty-eight thousand, one hundred sixty-six".